Hi there,

I have two medial PKRs and consider them a blessing.  I teach and am on my feet all day without problems.  I am very comfortable walking and have no issues on uneven ground.  I had to build up strength for multiple flights of stairs, but have gotten there, and have no problems on uneven ground-so I think your hiking is in.  If you check on Seerobinbike you will find that biking is one of her loves and she is very comfortable doing that-in fact it is one of the recommended activities.  So is swimming.  I am not a golfer, but I know that for my hardware it is okay.   Heavy pounding is not, so keep the running to a minimum, no heavy weight lifting etc.  Keeping yourself active and strong and maintaining a healthy weight are what will make your knee last longer.  From what I have read in journal articles a PKR should last at least 15 years for the majority if they were carefully chosen.  The early conversions to TKRs are often done for people whose other half goes to pot(not chosen appropriately for PKR), not any more hardware issues than a TKR.

Good luck as you make your decision.

Linda